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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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 * by Oracle in the LICENSE file that accompanied this code.
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 * This code is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
 * version 2 for more details (a copy is included in the LICENSE file that
 * accompanied this code).
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package com.oracle.svm.hosted.webimage.wasm;

import org.graalvm.nativeimage.LogHandler;
import org.graalvm.nativeimage.c.type.CCharPointer;
import org.graalvm.word.UnsignedWord;

import com.oracle.svm.core.headers.LibC;
import com.oracle.svm.hosted.webimage.wasm.nodes.WasmPrintNode;
import com.oracle.svm.hosted.webimage.wasm.nodes.WasmTrapNode;
import com.oracle.svm.webimage.functionintrinsics.JSFunctionIntrinsics;
import com.oracle.svm.webimage.print.WebImagePrintingProvider;

public class WasmLogHandler implements LogHandler {
    @Override
    public void log(CCharPointer bytes, UnsignedWord length) {
        WasmPrintNode.print(getOutputFile().num, 1, bytes, length);
    }

    @Override
    public void flush() {
        WebImagePrintingProvider.singleton().flush(getOutputFile());
    }

    @Override
    public void fatalError() {
        // Set the exit code before trapping.
        JSFunctionIntrinsics.setExitCode(LibC.EXIT_CODE_ABORT);
        WasmTrapNode.trap();
    }

    private static WebImagePrintingProvider.Descriptor getOutputFile() {
        return WebImagePrintingProvider.Descriptor.ERR;
    }
}
